CN115029059B - Ultraviolet light curing water-based anti-graffiti coating and preparation method thereof - Google Patents
Ultraviolet light curing water-based anti-graffiti coating and preparation method thereof Download PDFInfo
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- CN115029059B CN115029059B CN202210786187.7A CN202210786187A CN115029059B CN 115029059 B CN115029059 B CN 115029059B CN 202210786187 A CN202210786187 A CN 202210786187A CN 115029059 B CN115029059 B CN 115029059B
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- ultraviolet light
- water
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- diisocyanate
- linear polysiloxane
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 238000000576 coating method Methods 0.000 title claims abstract description 58
- 239000011248 coating agent Substances 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- -1 polysiloxane Polymers 0.000 claims abstract description 57
- 239000000178 monomer Substances 0.000 claims abstract description 46
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 36
- 239000004970 Chain extender Substances 0.000 claims abstract description 31
- 239000003973 paint Substances 0.000 claims abstract description 26
- 125000005442 diisocyanate group Chemical group 0.000 claims abstract description 19
- 239000012153 distilled water Substances 0.000 claims abstract description 11
- 230000003472 neutralizing effect Effects 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 73
- 239000000463 material Substances 0.000 claims description 45
- 238000006116 polymerization reaction Methods 0.000 claims description 43
- 238000001723 curing Methods 0.000 claims description 32
- 238000000016 photochemical curing Methods 0.000 claims description 29
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 27
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 18
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 17
- 239000003112 inhibitor Substances 0.000 claims description 17
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 claims description 15
- 238000006386 neutralization reaction Methods 0.000 claims description 13
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 claims description 11
- PTBDIHRZYDMNKB-UHFFFAOYSA-N 2,2-Bis(hydroxymethyl)propionic acid Chemical compound OCC(C)(CO)C(O)=O PTBDIHRZYDMNKB-UHFFFAOYSA-N 0.000 claims description 10
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 claims description 10
- 239000005058 Isophorone diisocyanate Substances 0.000 claims description 10
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 10
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 10
- 238000004945 emulsification Methods 0.000 claims description 10
- 239000003960 organic solvent Substances 0.000 claims description 10
- 229920005749 polyurethane resin Polymers 0.000 claims description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 9
- 239000003054 catalyst Substances 0.000 claims description 9
- NWVVVBRKAWDGAB-UHFFFAOYSA-N p-methoxyphenol Chemical compound COC1=CC=C(O)C=C1 NWVVVBRKAWDGAB-UHFFFAOYSA-N 0.000 claims description 9
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 8
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 8
- HVVWZTWDBSEWIH-UHFFFAOYSA-N [2-(hydroxymethyl)-3-prop-2-enoyloxy-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical compound C=CC(=O)OCC(CO)(COC(=O)C=C)COC(=O)C=C HVVWZTWDBSEWIH-UHFFFAOYSA-N 0.000 claims description 7
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 claims description 6
- BGNXCDMCOKJUMV-UHFFFAOYSA-N Tert-Butylhydroquinone Chemical compound CC(C)(C)C1=CC(O)=CC=C1O BGNXCDMCOKJUMV-UHFFFAOYSA-N 0.000 claims description 6
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 6
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 claims description 5
- JVYDLYGCSIHCMR-UHFFFAOYSA-N 2,2-bis(hydroxymethyl)butanoic acid Chemical compound CCC(CO)(CO)C(O)=O JVYDLYGCSIHCMR-UHFFFAOYSA-N 0.000 claims description 4
- VHSHLMUCYSAUQU-UHFFFAOYSA-N 2-hydroxypropyl methacrylate Chemical compound CC(O)COC(=O)C(C)=C VHSHLMUCYSAUQU-UHFFFAOYSA-N 0.000 claims description 4
- 239000005057 Hexamethylene diisocyanate Substances 0.000 claims description 4
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- JZODKRWQWUWGCD-UHFFFAOYSA-N 2,5-di-tert-butylbenzene-1,4-diol Chemical compound CC(C)(C)C1=CC(O)=C(C(C)(C)C)C=C1O JZODKRWQWUWGCD-UHFFFAOYSA-N 0.000 claims description 3
- FDSUVTROAWLVJA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol;prop-2-enoic acid Chemical compound OC(=O)C=C.OC(=O)C=C.OC(=O)C=C.OC(=O)C=C.OC(=O)C=C.OCC(CO)(CO)COCC(CO)(CO)CO FDSUVTROAWLVJA-UHFFFAOYSA-N 0.000 claims description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 3
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 claims description 3
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 claims description 3
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 claims description 3
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 claims description 3
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical compound CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 claims description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 229960002887 deanol Drugs 0.000 claims description 3
- 239000012972 dimethylethanolamine Substances 0.000 claims description 3
- 230000000379 polymerizing effect Effects 0.000 claims description 3
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 3
- AYEFIAVHMUFQPZ-UHFFFAOYSA-N propane-1,2-diol;prop-2-enoic acid Chemical compound CC(O)CO.OC(=O)C=C AYEFIAVHMUFQPZ-UHFFFAOYSA-N 0.000 claims description 2
- QDDZXPJEJCHUGE-UHFFFAOYSA-N 2,3-dihydroxypropane-1-sulfonic acid;sodium Chemical compound [Na].OCC(O)CS(O)(=O)=O QDDZXPJEJCHUGE-UHFFFAOYSA-N 0.000 claims 1
- 239000000839 emulsion Substances 0.000 abstract description 30
- 238000010521 absorption reaction Methods 0.000 abstract description 10
- 239000002313 adhesive film Substances 0.000 abstract description 7
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 6
- CERQOIWHTDAKMF-UHFFFAOYSA-N alpha-methacrylic acid Natural products CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 abstract description 4
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 abstract description 4
- 229920002554 vinyl polymer Polymers 0.000 abstract description 4
- 229910052710 silicon Inorganic materials 0.000 abstract description 3
- 239000010703 silicon Substances 0.000 abstract description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical group OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 abstract description 2
- 239000003513 alkali Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 150000001735 carboxylic acids Chemical group 0.000 abstract 1
- 238000007711 solidification Methods 0.000 abstract 1
- 230000008023 solidification Effects 0.000 abstract 1
- 229920002545 silicone oil Polymers 0.000 description 22
- DDKIXUQHRSUCMN-UHFFFAOYSA-N n-butylbutan-1-amine;propan-2-one Chemical compound CC(C)=O.CCCCNCCCC DDKIXUQHRSUCMN-UHFFFAOYSA-N 0.000 description 20
- 238000004448 titration Methods 0.000 description 20
- 238000010438 heat treatment Methods 0.000 description 19
- 238000001816 cooling Methods 0.000 description 18
- 230000003373 anti-fouling effect Effects 0.000 description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 6
- 229920005862 polyol Polymers 0.000 description 6
- 150000003077 polyols Chemical class 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- GWZMWHWAWHPNHN-UHFFFAOYSA-N 2-hydroxypropyl prop-2-enoate Chemical compound CC(O)COC(=O)C=C GWZMWHWAWHPNHN-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 229920013822 aminosilicone Polymers 0.000 description 4
- 239000013067 intermediate product Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000002210 silicon-based material Substances 0.000 description 3
- 229940044119 2-tert-butylhydroquinone Drugs 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 238000013112 stability test Methods 0.000 description 2
- KEQXNNJHMWSZHK-UHFFFAOYSA-L 1,3,2,4$l^{2}-dioxathiaplumbetane 2,2-dioxide Chemical compound [Pb+2].[O-]S([O-])(=O)=O KEQXNNJHMWSZHK-UHFFFAOYSA-L 0.000 description 1
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical group [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical group 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- ZHPNWZCWUUJAJC-UHFFFAOYSA-N fluorosilicon Chemical compound [Si]F ZHPNWZCWUUJAJC-UHFFFAOYSA-N 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- UZMKOEWHQQPOBJ-UHFFFAOYSA-M sodium;2,3-dihydroxypropane-1-sulfonate Chemical compound [Na+].OCC(O)CS([O-])(=O)=O UZMKOEWHQQPOBJ-UHFFFAOYSA-M 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000004250 tert-Butylhydroquinone Substances 0.000 description 1
- 235000019281 tert-butylhydroquinone Nutrition 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
- C09D175/16—Polyurethanes having carbon-to-carbon unsaturated bonds having terminal carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/34—Carboxylic acids; Esters thereof with monohydroxyl compounds
- C08G18/348—Hydroxycarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/61—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/6541—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen the low-molecular compounds being compounds of group C08G18/34
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/671—Unsaturated compounds having only one group containing active hydrogen
- C08G18/672—Esters of acrylic or alkyl acrylic acid having only one group containing active hydrogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/671—Unsaturated compounds having only one group containing active hydrogen
- C08G18/672—Esters of acrylic or alkyl acrylic acid having only one group containing active hydrogen
- C08G18/673—Esters of acrylic or alkyl acrylic acid having only one group containing active hydrogen containing two or more acrylate or alkylacrylate ester groups
Abstract
The invention relates to an ultraviolet light solidified water-based anti-graffiti paint and a preparation method thereof, which comprises the steps of utilizing linear polysiloxane with-OH at two ends to react with diisocyanate to bridge, introducing hydrophilic groups such as carboxylic acid, sulfonic acid and the like through a hydrophilic chain extender, then introducing ultraviolet light solidified (methyl) acryloyloxy through end capping of hydroxyl-containing (methyl) acrylic acid monomers or oligomers thereof, finally neutralizing by alkali and adding distilled water to emulsify to obtain the required paint, realizing ultraviolet light solidification and hydrophilicity of the paint, simultaneously retaining low surface activity of organic silicon, and realizing anti-graffiti performance. The raw materials adopted by the invention are low in price and simple in operation, the emulsion stability of the prepared coating is excellent, the hardness of the ultraviolet-cured adhesive film is high, the hydrophobicity is excellent, the water absorption is low, and the ultraviolet-cured adhesive film can be mixed with other vinyl monomers or vinyl comonomers for use.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to an ultraviolet light curing water-based anti-doodling coating and a preparation method thereof.
Background
In recent years, as the emission limits of VOCs and laws and regulations concerning environmental protection tend to be strict and standardized, most of the conventional oily paint is gradually replaced by aqueous paint, which is an important direction of the development of the paint today, and is excellent in performance and high in production efficiency, compared with other paints. The water-based paint is mainly prepared from water-based acrylic ester, water-based polyurethane and water-based epoxy resin, and the water-based resin is unprecedented in development. The market share of the current water-based paint is greatly increased, and the paint is one of the dominant directions of future paint.
The ultraviolet curing technology is a novel technology which utilizes a photoinitiator to generate free radicals under the irradiation of ultraviolet light so as to crosslink and cure a prepolymer containing carbon double bonds and a polyfunctional low-molecular monomer. Compared with the traditional heat curing technology, the ultraviolet light curing resin does not need to be heated, and the monomer can be crosslinked and cured in a few seconds to tens of seconds under the normal temperature condition, so that the production time and the energy consumption are greatly reduced, and meanwhile, the system is environment-friendly and safer, and no organic solvent is used. Compared with the traditional thermosetting coating, the ultraviolet curing coating has the unique advantages of being capable of being quickly cured to form a film under ultraviolet irradiation, improving comprehensive performance, being economical and environment-friendly, and the like.
The anti-graffiti coating belongs to isolation protective coating, can prevent various greasy dirt from adhering to the surface due to low surface adhesion, and can seal all pores and cracks on the surface by coating equipment with the anti-graffiti coating, so that the color of the coating cannot permeate into the surface at all. At present, the anti-graffiti material mainly comprises three types of fluorine-containing materials, fluorine-containing materials and organic silicon materials, and the fluorine-containing materials are high in price, so that the organic silicon materials account for the largest market share. Therefore, the development of the preparation method of the ultraviolet light curing water-based anti-doodling material with low cost has wide market prospect and important significance.
Disclosure of Invention
Aiming at the defects that the existing anti-graffiti coating is difficult to be compatible with the water-based UV coating and the price of using a fluorine-silicon material is high, the invention provides an ultraviolet light curing water-based anti-graffiti coating and a preparation method thereof.
The above object of the present invention is achieved by the following technical solutions:
in a first aspect, the invention provides an ultraviolet light curing water-based anti-doodling coating, which is prepared by polymerizing linear polysiloxane with-OH at two ends, diisocyanate, hydrophilic chain extender, polymerization inhibitor and photo-curing monomer material; wherein the ratio of the sum of the amounts of the-OH in the linear polysiloxane having-OH at both ends, the-OH in the hydrophilic chain extender, and the-OH in the photo-curable monomer material to the amount of the-NCO in the diisocyanate is 1:1 to 1.2; the dosage of the hydrophilic chain extender is 6-15 wt% of the linear polysiloxane with-OH at both ends; the dosage of the photo-curing monomer material is 1.5 to 6.5 weight percent of linear polysiloxane with-OH at both ends; the polymerization inhibitor accounts for 0.1 to 1.2 weight percent of the photo-curing monomer material.
As a preferred embodiment, the linear polysiloxane having-OH at both ends has a molecular structural formula of:
wherein a is a natural number of 2-5, n is a natural number of 20-60, and R' is-OH.
According to the ultraviolet light curing water-based anti-graffiti coating, the linear polysiloxane with double ends containing-OH is used for completely replacing polyol or dihydric alcohol, so that the main chain section of polyurethane resin is a silica chain with double side groups being methyl, the anti-fouling performance of the coating can be improved, and the coating has the anti-graffiti performance; in addition, the ultraviolet light curability of the coating is achieved by the introduction of the light curable monomer material. In addition, the linear polysiloxane with the double ends containing-OH can ensure that the viscosity of the linear polysiloxane is moderate by setting the polymerization degree n to 20-60, ensure that the polymerization reaction is smoothly carried out and the polymerization rate is moderate, ensure that the hydrophilic chain extender is smoothly introduced, and ensure the anti-fouling effect. In the present invention, the ratio of the sum of the amounts of-OH in the linear polysiloxane having-OH at both ends, -OH in the hydrophilic chain extender, and-OH in the photocurable monomer material to the amount of-NCO in the diisocyanate is set to 1:1 to 1.2, prevents the extremely small amount of water possibly contained in the raw materials from reacting with-NCO, and leads to the loss of-NCO, thereby ensuring that the obtained intermediate products are all blocked by-NCO and facilitating the introduction of the following photocuring monomer materials. The application ensures the stability of the emulsion of the coating and has moderate viscosity through the setting of the dosage of the hydrophilic chain extender. The setting of this application through photocuring monomer material and polymerization inhibitor quantity can guarantee the photocuring speed of coating emulsion, and the polymerization process can not lead to the gel. In a second aspect, the invention provides a preparation method of the ultraviolet light curing water-based anti-graffiti coating, which comprises the following steps:
(1) Dissolving linear polysiloxane with double ends containing-OH and diisocyanate in an organic solvent, adding a catalyst, and reacting at 70-80 ℃ until the content of-NCO in the system is not changed any more, thereby obtaining prepolymer containing terminal-NCO;
(2) Adding a hydrophilic chain extender, and carrying out chain extension reaction at 75-90 ℃ until the-NCO content in the system is not changed any more, thereby obtaining the organosilicon modified polyurethane resin containing carboxyl;
(3) Adding polymerization inhibitor and photo-curing monomer material, reacting at 55-65 ℃ until the-NCO content in the system is not changed any more, and obtaining organosilicon modified polyurethane resin containing acryloyloxy;
(4) And (3) reducing the temperature to 30-45 ℃, adding a neutralizer for neutralization, adding distilled water for emulsification, and distilling under reduced pressure to remove the organic solvent to obtain the ultraviolet light curing water-based anti-graffiti coating.
Specifically, the diisocyanate in the step (1) is any one of isophorone diisocyanate, toluene diisocyanate, 4-diphenylmethane diisocyanate and hexamethylene diisocyanate.
Specifically, the organic solvent in the step (1) is any one or more of acetone, toluene, n-heptane, cyclohexane, ethyl acetate and methyl isobutyl ketone.
Specifically, the catalyst in the step (1) is dibutyl tin dilaurate, and the dosage of the catalyst accounts for 0.1-1.2 wt% of the total solid content in the ultraviolet light curing water-based anti-graffiti coating.
Specifically, the hydrophilic chain extender in the step (2) is any one of dimethylolbutyric acid, dimethylolpropionic acid, 1, 2-dihydroxy-3-propane sodium sulfonate and 1, 4-butanediol-2-sodium sulfonate.
Specifically, the polymerization inhibitor in the step (3) is any one or more of p-hydroxyanisole, hydroquinone, p-benzoquinone, 2-tertiary butyl hydroquinone and 2, 5-di-tertiary butyl hydroquinone.
Specifically, the photo-curing monomer material in the step (3) is any one of acrylic acid-2-hydroxypropyl ester, acrylic acid-2-hydroxyethyl ester, methacrylic acid-2-hydroxypropyl ester, methacrylic acid-2-hydroxyethyl ester, pentaerythritol triacrylate and dipentaerythritol pentaacrylate. Thus, the photocuring monomer is a hydroxyl-containing (methyl) acrylic monomer which contains a plurality of functional groups, so that the hardness of the material can be improved, and the water absorption rate of the material can be reduced.
Specifically, the neutralizing agent in the step (4) is any one or more of triethylamine, diethanolamine, dimethylethanolamine, ammonia water and methylamine; the neutralization degree is 80-120%.
Wherein, the mass fraction of-NCO is measured by a di-n-butylamine-acetone titration method during the reaction in the step (1), the step (2) and the step (3), and the next reaction is carried out when the-NCO content in the system is not changed any more.
According to the method, the linear polysiloxane with double ends containing-OH is used for completely replacing polyol or dihydric alcohol, so that the main chain section of the polyurethane resin is a silica chain with double side groups being methyl, the anti-fouling performance of the coating can be improved, and the coating has anti-graffiti performance; in addition, the ultraviolet light curability of the coating is achieved by the introduction of the light curable monomer material. In addition, the linear polysiloxane with the double ends containing-OH can ensure that the viscosity of the linear polysiloxane is moderate by setting the polymerization degree n to 20-60, ensure that the polymerization reaction is smoothly carried out and the polymerization rate is moderate, ensure that the hydrophilic chain extender is smoothly introduced, and ensure the anti-fouling effect. In the present invention, the ratio of the sum of the amounts of-OH in the linear polysiloxane having-OH at both ends, -OH in the hydrophilic chain extender, and-OH in the photocurable monomer material to the amount of-NCO in the diisocyanate is set to 1:1 to 1.2, prevents the extremely small amount of water possibly contained in the raw materials from reacting with-NCO, and leads to the loss of-NCO, thereby ensuring that the obtained intermediate products are all blocked by-NCO and facilitating the introduction of the following photocuring monomer materials. The application ensures the stability of the emulsion of the coating and has moderate viscosity through the setting of the dosage of the hydrophilic chain extender. The setting of this application through photocuring monomer material and polymerization inhibitor quantity can guarantee the photocuring speed of coating emulsion, and the polymerization process can not lead to the gel.
According to the ultraviolet light-cured water-based anti-doodling paint and the preparation method thereof, linear polysiloxane with double ends containing-OH is utilized to react with diisocyanate to bridge, hydrophilic chain extender is used for introducing hydrophilic groups such as carboxylic acid and sulfonic acid, hydroxyl-containing (methyl) acrylic acid monomer or oligomer end-capping is used for introducing ultraviolet light-cured (methyl) acryloyloxy group, finally alkali neutralization and distilled water emulsification are used for obtaining the required paint, ultraviolet light-curing property and hydrophilicity of the paint are realized, and meanwhile, low surface activity of organic silicon is reserved, so that the anti-doodling performance is realized. The method has the advantages of low price of raw materials, simple operation, excellent emulsion stability of the prepared coating, high hardness, excellent hydrophobicity and excellent water resistance of the ultraviolet-cured adhesive film, and can be mixed with other vinyl monomers or vinyl comonomers for use, thereby playing roles of protection and anti-fouling.
Detailed Description
The following detailed description of the present invention will provide further details in order to make the above-mentioned objects, features and advantages of the present invention more comprehensible. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.
The term "prepared from …" as used herein is synonymous with "comprising". The terms "comprising," "including," "having," "containing," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, step, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, step, method, article, or apparatus.
When an equivalent, concentration, or other value or parameter is expressed as a range, preferred range, or a range bounded by a list of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when ranges of "1 to 5" are disclosed, the described ranges should be construed to include ranges of "1 to 4", "1 to 3", "1 to 2 and 4 to 5", "1 to 3 and 5", and the like. When a numerical range is described herein, unless otherwise indicated, the range is intended to include its endpoints and all integers and fractions within the range.
Furthermore, the indefinite articles "a" and "an" preceding an element or component of the invention are not limited to the requirements of the number of elements or components (i.e. the number of occurrences). Thus, the use of "a" or "an" should be interpreted as including one or at least one, and the singular reference of an element or component also includes the plural reference unless the amount is obvious to the singular reference.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The ultraviolet light curing water-based anti-doodling paint is prepared by polymerizing linear polysiloxane with-OH at two ends, diisocyanate, hydrophilic chain extender, polymerization inhibitor and photo-curing monomer material; wherein the ratio of the sum of the amounts of the-OH in the linear polysiloxane having-OH at both ends, the-OH in the hydrophilic chain extender, and the-OH in the photo-curable monomer material to the amount of the-NCO in the diisocyanate is 1:1 to 1.2; the dosage of the hydrophilic chain extender is 6-15 wt% of the linear polysiloxane with-OH at both ends; the dosage of the photo-curing monomer material is 1.5 to 6.5 weight percent of linear polysiloxane with-OH at both ends; the polymerization inhibitor accounts for 0.1 to 1.2 weight percent of the photo-curing monomer material.
Preferably, the linear polysiloxane with-OH at both ends has a molecular structural formula:
wherein a is a natural number of 2-5, n is a natural number of 20-60, and R' is-OH.
According to the ultraviolet light curing water-based anti-graffiti coating, the linear polysiloxane with double ends containing-OH is used for completely replacing polyol or dihydric alcohol, so that the main chain section of polyurethane resin is a silica chain with double side groups being methyl, the anti-fouling performance of the coating can be improved, and the coating has the anti-graffiti performance; in addition, the ultraviolet light curability of the coating is achieved by the introduction of the light curable monomer material.
In the present invention, the ratio of the sum of the amounts of-OH in the linear polysiloxane having-OH at both ends, -OH in the photocurable monomer material, and-OH in the hydrophilic chain extender to the amount of-NCO in the diisocyanate is set to 1:1 to 1.2, prevents the extremely small amount of water possibly contained in the raw materials from reacting with-NCO, and leads to the loss of-NCO, thereby ensuring that the obtained intermediate products are all blocked by-NCO and facilitating the introduction of the following photocuring monomer materials.
The polymerization degree n determines the viscosity and the hydroxyl content of the silicone oil, and the larger n is, the higher n is, so that the too high viscosity can lead to difficult polymerization and is more unfavorable for the introduction of the hydrophilic chain extender; the smaller n the higher the hydroxyl content, which results in an excessively fast polymerization rate; in addition, the higher the hydroxyl content, the more diisocyanate is used, and the fewer silane chains are used, resulting in a significant decrease in the anti-fouling effect. The linear polysiloxane with the double ends containing-OH is preferably 20-60 in polymerization degree, so that the viscosity of the linear polysiloxane is moderate, the smooth proceeding of the polymerization reaction and the moderate polymerization rate are ensured, the smooth introduction of the hydrophilic chain extender is ensured, and the anti-fouling effect is ensured.
When the dosage of the hydrophilic chain extender is too low, the emulsion is unstable, and when the dosage is too high, the viscosity of the emulsion is too high, which is not beneficial to the coating of the subsequent coating emulsion. The application ensures the stability of the emulsion of the coating and has moderate viscosity through the setting of the dosage of the hydrophilic chain extender.
The light curing speed of the coating is too slow or even the curing is incomplete due to the too low light curing monomer material consumption, and the gel is easy to be generated in the polymerization process due to the too high light curing monomer material consumption; too high an amount of polymerization inhibitor can affect the photo-curing of the coating. The setting of this application through photocuring monomer material and polymerization inhibitor quantity can guarantee the photocuring speed of coating emulsion, and the polymerization process can not lead to the gel.
The invention discloses a preparation method of the ultraviolet light curing water-based anti-doodling paint, which comprises the following steps:
(1) Dissolving linear polysiloxane with double ends containing-OH and diisocyanate in an organic solvent, adding a catalyst, and reacting at 70-80 ℃ until the content of-NCO in the system is not changed any more, thereby obtaining prepolymer containing terminal-NCO;
(2) Adding a hydrophilic chain extender, and carrying out chain extension reaction at 75-90 ℃ until the-NCO content in the system is not changed any more, thereby obtaining the organosilicon modified polyurethane resin containing carboxyl;
(3) Adding polymerization inhibitor and photo-curing monomer material, reacting at 55-65 ℃ until the-NCO content in the system is not changed any more, and obtaining organosilicon modified polyurethane resin containing acryloyloxy;
(4) And (3) reducing the temperature to 30-45 ℃, adding a neutralizer for neutralization, adding distilled water for emulsification, and distilling under reduced pressure to remove the organic solvent to obtain the ultraviolet light curing water-based anti-graffiti coating.
Specifically, the diisocyanate in the step (1) is any one of isophorone diisocyanate (IPDI), toluene Diisocyanate (TDI), 4-diphenylmethane diisocyanate (MDI), hexamethylene Diisocyanate (HDI).
Specifically, the organic solvent in the step (1) is any one or more of acetone, toluene, n-heptane, cyclohexane, ethyl acetate and methyl isobutyl ketone.
Specifically, the catalyst in the step (1) is dibutyl tin dilaurate (DBTDL), and the dosage of the catalyst accounts for 0.1-1.2 wt% of the total solid content in the ultraviolet light curing water-based anti-graffiti coating.
Specifically, the hydrophilic chain extender in the step (2) is any one of dimethylolbutyric acid (DMBA), dimethylolpropionic acid (DMPA), sodium 1, 2-dihydroxy-3-propane sulfonate (DHPA) and sodium 1, 4-butanediol-2-sulfonate.
Specifically, the polymerization inhibitor in the step (3) is any one or more of p-hydroxyanisole (MEHQ), hydroquinone (HQ), p-benzoquinone (PBQ), 2-tert-butylhydroquinone (TBHQ) and 2, 5-di-tert-butylhydroquinone (DBHQ).
Specifically, the photo-curable monomer material in the step (3) is any one of 2-hydroxypropyl acrylate (HPA), 2-hydroxyethyl acrylate (HEA), 2-hydroxypropyl methacrylate (HPMA), 2-hydroxyethyl methacrylate (HEMA), pentaerythritol triacrylate (PETA) and dipentaerythritol pentaacrylate. Thus, the photocuring monomer is a hydroxyl-containing (methyl) acrylic monomer which contains a plurality of functional groups, so that the hardness of the material can be improved, and the water absorption rate of the material can be reduced.
Specifically, the neutralizing agent in the step (4) is any one or more of triethylamine, diethanolamine, dimethylethanolamine, ammonia water and methylamine; the neutralization degree is 80-120%.
Wherein, the mass fraction of-NCO is measured by a di-n-butylamine-acetone titration method during the reaction in the step (1), the step (2) and the step (3), and the next reaction is carried out when the-NCO content in the system is not changed any more.
According to the method, the linear polysiloxane with double ends containing-OH is used for completely replacing polyol or dihydric alcohol, so that the main chain section of the polyurethane resin is a silica chain with double side groups being methyl, the anti-fouling performance of the coating can be improved, and the coating has anti-graffiti performance; in addition, the ultraviolet light curability of the coating is achieved by the introduction of the light curable monomer material. In addition, the linear polysiloxane with the double ends containing-OH can ensure that the viscosity of the linear polysiloxane is moderate by setting the polymerization degree n to 20-60, ensure that the polymerization reaction is smoothly carried out and the polymerization rate is moderate, ensure that the hydrophilic chain extender is smoothly introduced, and ensure the anti-fouling effect. In the present invention, the ratio of the sum of the amounts of-OH in the linear polysiloxane having-OH at both ends, -OH in the photocurable monomer material, and-OH in the hydrophilic chain extender to the amount of-NCO in the diisocyanate is set to 1:1 to 1.2, prevents the extremely small amount of water possibly contained in the raw materials from reacting with-NCO, and leads to the loss of-NCO, thereby ensuring that the obtained intermediate products are all blocked by-NCO and facilitating the introduction of the following photocuring monomer materials.
The application ensures the stability of the emulsion of the coating and has moderate viscosity through the setting of the dosage of the hydrophilic chain extender. The setting of this application through photocuring monomer material and polymerization inhibitor quantity can guarantee the photocuring speed of coating emulsion, and the polymerization process can not lead to the gel.
Example 1:
60g of double-end hydroxypropyl silicone oil (-OH content is 1.7 wt%) with a polymerization degree of 30 is added into a reaction bottle, the double-end hydroxypropyl silicone oil is dehydrated for 1.5 hours at the temperature of 90 ℃ and the vacuum degree of-0.1 MPa, the water content in the silicone oil is reduced to the minimum, and the probability of the subsequently added isophorone diisocyanate reacting with water is reduced as much as possible. Then cooling the dehydrated double-end hydroxypropyl silicone oil to below 45 ℃, adding 11.74g isophorone diisocyanate, 50g acetone and 1.2g dibutyltin dilaurate, stirring uniformly, heating to 75 ℃ for reaction, measuring the content of-NCO by a di-n-butylamine-acetone titration method in the reaction process, after 3 hours of reaction, adding 4.8g dimethylolpropionic acid, heating to 85 ℃ for reaction, measuring the content of-NCO by a di-n-butylamine-acetone titration method in the reaction process, after 2 hours of reaction, keeping the content of-NCO unchanged, cooling to below 45 ℃, adding 0.02g p-hydroxyanisole and 2.8g pentaerythritol triacrylate, heating to 65 ℃ for reaction, measuring the content of-NCO by a di-n-butylamine-acetone titration method in the reaction process, after 2 hours of reaction, after the NCO is consumed, cooling to below 45 ℃, adding 3.7g triethylamine for neutralization, adding 120g distilled water for emulsification, finally distilling to remove acetone, thereby obtaining the ultraviolet light water-based anti-paint with 192.28.0 percent of solid content.
The reaction principle of the reaction involved in the production method of the present invention will be described below by taking example 1 as an example:
the reaction formula of the reaction in the step (1) is as follows:
the reaction formula of the reaction in the step (2) is as follows:
the reaction formula of the reaction in the step (3) is as follows:
wherein, the structural formula of R in the reaction formulas (2) and (3) is as follows:
n is a natural number between 20 and 60; m is a natural number greater than n.
Example 2:
60g of double-end hydroxypropyl silicone oil (-OH content is 1.7 wt%) with a polymerization degree of 30 is added into a reaction bottle, the double-end hydroxypropyl silicone oil is dehydrated for 1.5 hours at the temperature of 90 ℃ and the vacuum degree of-0.1 MPa, the water content in the silicone oil is reduced to the minimum, and the probability of the subsequently added isophorone diisocyanate reacting with water is reduced as much as possible. Then cooling the dehydrated double-end hydroxypropyl silicone oil to below 45 ℃, adding 12.84g isophorone diisocyanate, 50g n-heptane and 1.3g dibutyl tin dilaurate, stirring uniformly, heating to 75 ℃ for reaction, measuring the content of-NCO by a di-n-butylamine-acetone titration method in the reaction process, after 3 hours of reaction, adding 6g dimethylolpropionic acid, heating to 85 ℃ for reaction, measuring the content of-NCO by the di-n-butylamine-acetone titration method in the reaction process, after 2 hours, not changing the content of-NCO, cooling to below 45 ℃, adding 0.02g p-hydroxyanisole and 1.36g 2-hydroxypropyl acrylate, heating to 65 ℃ for reaction, measuring the content of-NCO by the di-n-butylamine-acetone titration method in the reaction process, after 2 hours of reaction, after the consumption of-NCO, cooling to below 45 ℃, adding 4.55g triethylamine for neutralization, adding 120g distilled water for emulsification, finally distilling to remove the n-heptane, and obtaining the ultraviolet light resistant waterborne coating with the ultraviolet light resistant content of 41.38 g, and the ultraviolet light resistant waterborne coating with the ultraviolet light resistant content of 41% is obtained.
Example 3:
60g of double-end hydroxypropyl silicone oil (-OH content is 1.7 wt%) with a polymerization degree of 30 is added into a reaction bottle, the double-end hydroxypropyl silicone oil is dehydrated for 1.5 hours at the temperature of 90 ℃ and the vacuum degree of-0.1 MPa, the water content in the silicone oil is reduced to the minimum, and the probability of reaction of toluene diisocyanate added subsequently and water is reduced as much as possible. Then cooling the dehydrated double-end hydroxypropyl silicone oil to below 45 ℃, adding 10.92g toluene diisocyanate, 50g ethyl acetate and 1.3g dibutyl tin dilaurate, stirring uniformly, heating to 70 ℃ for reaction, measuring the content of-NCO by a di-n-butylamine-acetone titration method in the reaction process, reacting for 2.5 hours, adding 7.2g dimethylolpropionic acid, heating to 80 ℃ for reaction, measuring the content of-NCO by a di-n-butylamine-acetone titration method in the reaction process, reacting for 2 hours, heating to 80 ℃, cooling to below 45 ℃, adding 0.04g p-hydroxyanisole and 3.4g pentaerythritol triacrylate, heating to 65 ℃ for reaction, measuring the content of-NCO by a di-n-butylamine-acetone titration method in the reaction process, after the reaction is completed for 2 hours, cooling to below 45 ℃, adding 5.68g diethanolamine for neutralization, adding 120g distilled water for emulsification, finally distilling to remove ethyl acetate, and obtaining the water-resistant ultraviolet light curing paint with 205.42% of water-resistant ultraviolet light content of 3.42%.
Example 4:
60g of double-end hydroxypropyl silicone oil (-OH content is 0.8 wt%) with a polymerization degree of 50 is added into a reaction bottle, the double-end hydroxypropyl silicone oil is dehydrated for 1.5 hours at the temperature of 90 ℃ and the vacuum degree of-0.1 MPa, the water content in the silicone oil is reduced to the minimum, and the probability of the subsequently added isophorone diisocyanate reacting with water is reduced as much as possible. Then cooling the dehydrated double-end hydroxypropyl silicone oil to below 45 ℃, adding 8.93g isophorone diisocyanate, 50g ethyl acetate and 1.2g dibutyltin dilaurate, stirring uniformly, heating to 75 ℃ for reaction, measuring the content of-NCO by a di-n-butylamine-acetone titration method in the reaction process, after 3 hours of reaction, adding 6g dimethylolpropionic acid, heating to 85 ℃ for reaction, measuring the content of-NCO by the di-n-butylamine-acetone titration method in the reaction process, after 2 hours of reaction, keeping the content of-NCO unchanged, cooling to below 45 ℃, adding 0.02g p-hydroxyanisole and 2.18g pentaerythritol triacrylate, heating to 65 ℃ for reaction, measuring the content of-NCO by the di-n-butylamine-acetone titration method in the reaction process, after 2 hours of reaction, consuming-NCO, cooling to below 45 ℃, adding 4.55g triethylamine for neutralization, adding 120g distilled water for emulsification, and finally distilling to remove ethyl acetate to obtain the ultraviolet light water-based anti-paint with 193.16g and solid content of 2.42%.
Example 5:
60g of double-end hydroxypropyl silicone oil (-OH content is 0.8 wt%) with a polymerization degree of 50 is added into a reaction bottle, the double-end hydroxypropyl silicone oil is dehydrated for 1.5 hours at the temperature of 90 ℃ and the vacuum degree of-0.1 MPa, the water content in the silicone oil is reduced to the minimum, and the probability of the subsequently added isophorone diisocyanate reacting with water is reduced as much as possible. Then cooling the dehydrated double-end hydroxypropyl silicone oil to below 45 ℃, adding 10.03g isophorone diisocyanate, 50g ethyl acetate and 1.2g dibutyltin dilaurate, stirring uniformly, heating to 75 ℃ for reaction, measuring the content of-NCO by a di-n-butylamine-acetone titration method in the reaction process, after 3 hours of reaction, keeping the content of-NCO unchanged, adding 7.2g dimethylolpropionic acid, heating to 85 ℃ for reaction, measuring the content of-NCO by the di-n-butylamine-acetone titration method in the reaction process, after 2 hours of reaction, keeping the content of-NCO unchanged, cooling to below 45 ℃, adding 0.02g p-hydroxyanisole and 1.07g 2-hydroxypropyl acrylate, heating to 65 ℃ for reaction, measuring the content of-NCO by the di-n-butylamine-acetone titration method in the reaction process, after 2 hours of reaction, consuming-NCO, cooling to below 45 ℃, adding 5.68g diethanolamine for neutralization, adding 120g distilled water for emulsification, finally removing ethyl acetate under reduced pressure, and obtaining the ultraviolet light resistant water-based paint with the solid content of 199.78g, and curing to obtain the ultraviolet light resistant water-based paint with the solid content of 199.78%.
Comparative example:
60g of double-end amino silicone oil with the polymerization degree of 40 is added into a reaction bottle, dehydration is carried out for 1.5 hours at the temperature of 90 ℃ and the vacuum degree of-0.1 MPa, the water content in the silicone oil is reduced to the minimum, and the probability of reaction between the toluene diisocyanate added subsequently and water is reduced as much as possible. Then cooling the dehydrated double-end amino silicone oil to below 45 ℃, adding 10.63g toluene diisocyanate, 50g acetone and 1.3g dibutyl tin dilaurate, stirring uniformly, heating to 75 ℃ for reaction, measuring the content of-NCO by a di-n-butylamine-acetone titration method in the reaction process, after reacting for 4 hours, adding 4.2g dimethylolpropionic acid, heating to 85 ℃ for reaction, measuring the content of-NCO by the di-n-butylamine-acetone titration method in the reaction process, reacting for 2.5 hours, after reacting for no longer, cooling to below 45 ℃, adding 0.02g hydroquinone and 1.29g 2-hydroxyethyl acrylate, heating to 65 ℃ for reaction, measuring the content of-NCO by the di-n-butylamine-acetone titration method in the reaction process, after finishing the reaction for 2 hours, cooling to below 45 ℃, adding 3.26g diethanolamine for neutralization, adding 120g distilled water for emulsification, and finally distilling to remove acetone to obtain 190.88g aqueous organic silicon polyurethane emulsion with the solid content of 40.1%.
Performance test:
the performance of the emulsions of the ultraviolet light curing aqueous anti-graffiti coating prepared in the above examples 1 to 5 and the aqueous organosilicon polyurethane emulsion prepared in comparative example 1 were tested, including emulsion stability test and hardness, contact angle and water absorption of the coating after curing.
1. Emulsion stability test
The storage stability of the above emulsions was determined according to GB/T6753.3-1986. And (3) selecting an artificial condition simulation test emulsion stability experiment, taking about 50g of emulsion in a conical flask, sealing and placing in a constant-temperature drying oven, storing for 30 days at 50+/-1 ℃, and checking whether sediment exists.
2. 15g of the emulsion was taken, added with 0.3g of a photoinitiator 1173, uniformly mixed and coated on a sample plate, then dried at 65 ℃ for moisture, and UV cured by a high-pressure tube mercury lamp, and the following properties were tested.
(1) Hardness of
GB/T531.1-2008 is adopted for preparing samples, each sample is tested for 5 times in parallel according to the Shore D hardness test, and an average value is obtained.
(2) Contact angle
And measuring the room temperature static contact angle of the cured coating surface by adopting a contact angle measuring instrument, recording contact angle data of 5 groups of deionized water on the coating surface, and taking an average value.
(3) Water absorption rate
Cutting the fully dried adhesive film into square samples with the mass of 2.0cm and 2.0cm, immersing the samples in deionized water for 48 hours, taking out the samples, drying the water on the surfaces of the samples by using filter paper, weighing the mass, and calculating the water absorption rate according to the mass ratio of the difference before and after immersing to the mass before immersing.
Test results:
the test results are shown in the following table:
table 1 test results
| Group of | Emulsion stability | Shore D hardness/HD | Contact angle/° | Water absorption/% |
| Example 1 | White emulsion, stable | 75 | 91.4 | 0.428 |
| Example 2 | Milk white, semi-transparent and stable | 68 | 87.6 | 0.817 |
| Example 3 | White emulsion, stable | 78 | 88.9 | 0.447 |
| Example 4 | White emulsion, stable | 82 | 93.2 | 0.385 |
| Example 5 | Milky white bluish, stable | 81 | 90.3 | 0.424 |
| Comparative example | White emulsion, layering | 64 | 78.9 | 1.116 |
As can be seen from Table 1, the emulsions of the ultraviolet light-curable aqueous anti-graffiti coating prepared in examples 1 to 5 of the present invention were free from delamination and precipitation after standing for a certain period of time, and were excellent in stability. The ultraviolet light curing water-based anti-doodling paint prepared by adopting the embodiment 1-5 of the invention has the Shore D hardness of 68-82, the contact angle of deionized water on the surface of the paint is 87.6-93.2 degrees, the water absorption is 0.385-0.817%, which indicates that the paint film has excellent hardness, hydrophobicity and lower water absorption. In the comparative example, after the double-end amino silicone oil is adopted to replace the polyol or the dihydric alcohol, the prepared emulsion has layering phenomenon after standing for a certain time, and the stability can not meet the requirement; in addition, in the comparative example, after the double-end amino silicone oil is adopted to replace the polyol or the dihydric alcohol, the hardness and the contact angle of the adhesive film prepared by the emulsion after curing are obviously lower than those of the adhesive films in examples 1 to 5, and the water absorption rate is obviously higher than those of the adhesive films in examples 1 to 5.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (7)
1. The preparation method of the ultraviolet light curing water-based anti-doodling paint is characterized in that the ultraviolet light curing water-based anti-doodling paint is prepared by polymerizing linear polysiloxane with-OH at two ends, diisocyanate, hydrophilic chain extender, polymerization inhibitor and photo-curing monomer material; wherein the ratio of the sum of the amounts of the-OH in the linear polysiloxane having-OH at both ends, the-OH in the hydrophilic chain extender, and the-OH in the photo-curable monomer material to the amount of the-NCO in the diisocyanate is 1: 1-1.2; the dosage of the hydrophilic chain extender is 6-15wt% of the linear polysiloxane with-OH at both ends; the dosage of the photo-curing monomer material is 1.5-6.5wt% of linear polysiloxane with-OH at both ends; the polymerization inhibitor is 0.1-1.2 wt% of the photo-curing monomer material;
the molecular structural general formula of the linear polysiloxane with the double ends containing-OH is as follows:
wherein a is a natural number in 2-5, n is a natural number in 20-60, and R' is-OH;
the hydrophilic chain extender is any one of dimethylolbutyric acid, dimethylolpropionic acid, 1, 2-dihydroxyl-3-propanesulfonic acid sodium and 1, 4-butanediol-2-sodium sulfonate;
the photo-curing monomer material is any one of acrylic acid-2-hydroxypropyl ester, acrylic acid-2-hydroxyethyl ester, methacrylic acid-2-hydroxypropyl ester, methacrylic acid-2-hydroxyethyl ester, pentaerythritol triacrylate and dipentaerythritol pentaacrylate;
the preparation method comprises the following steps:
(1) Dissolving linear polysiloxane with double ends containing-OH and diisocyanate in an organic solvent, adding a catalyst, and reacting at 70-80 ℃ until the content of-NCO in a system is not changed any more, thereby obtaining a prepolymer containing terminal-NCO;
(2) Adding a hydrophilic chain extender, and carrying out chain extension reaction at 75-90 ℃ until the-NCO content in the system is not changed any more, thereby obtaining the carboxyl-containing organosilicon modified polyurethane resin;
(3) Adding a polymerization inhibitor and a photo-curing monomer material, and reacting at 55-65 ℃ until the-NCO content in the system is not changed any more, thereby obtaining the organosilicon modified polyurethane resin containing acryloyloxy;
(4) And (3) reducing the temperature to 30-45 ℃, adding a neutralizer for neutralization, adding distilled water for emulsification, and distilling under reduced pressure to remove the organic solvent, thereby obtaining the ultraviolet light curing water-based anti-graffiti coating.
2. The method of manufacturing according to claim 1, characterized in that: the diisocyanate in the step (1) is any one of isophorone diisocyanate, toluene diisocyanate, 4-diphenylmethane diisocyanate and hexamethylene diisocyanate.
3. The method of manufacturing according to claim 1, characterized in that: the organic solvent in the step (1) is any one or more of acetone, toluene, n-heptane, cyclohexane, ethyl acetate and methyl isobutyl ketone.
4. The method of manufacturing according to claim 1, characterized in that: the catalyst in the step (1) is dibutyl tin dilaurate, and the dosage of the catalyst accounts for 0.1-1.2wt% of the total solid content in the ultraviolet light curing water-based anti-graffiti coating.
5. The method of manufacturing according to claim 1, characterized in that: the polymerization inhibitor in the step (3) is any one or more of p-hydroxyanisole, hydroquinone, p-benzoquinone, 2-tertiary butyl hydroquinone and 2, 5-di-tertiary butyl hydroquinone.
6. The method of manufacturing according to claim 1, characterized in that: the neutralizing agent in the step (4) is any one or more of triethylamine, diethanolamine, dimethylethanolamine, ammonia water and methylamine; the neutralization degree is 80-120%.
7. An ultraviolet light-cured aqueous anti-graffiti coating, which is characterized in that the ultraviolet light-cured aqueous anti-graffiti coating is prepared by the preparation method of any one of claims 1-6.
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| CN110606932A (en) * | 2019-10-28 | 2019-12-24 | 广东昊辉新材料有限公司 | Photo-curing polyurethane acrylate aqueous dispersion and preparation method thereof |
| CN114316202A (en) * | 2021-12-16 | 2022-04-12 | 上海船舶工艺研究所(中国船舶工业集团公司第十一研究所) | Ultraviolet-curing aqueous polyurethane acrylate emulsion and preparation method thereof |
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| CN102060974B (en) * | 2010-12-21 | 2012-11-21 | 东莞市贝特利新材料有限公司 | Synthesis method of organosilicon-modified aqueous polyurethane acrylate |
| CN105885009A (en) * | 2014-12-15 | 2016-08-24 | 江南大学 | Preparation method of organic silicon modified waterborne UV curable polyurethane (PU) with high poly-alkenyl activity |
| CN104479104A (en) * | 2014-12-23 | 2015-04-01 | 江南大学 | Preparation method of high-temperature-resistant water-based UV-cured organosilicon-modified polyurethane |
| CN109054623A (en) * | 2018-08-22 | 2018-12-21 | 广东昊辉新材料有限公司 | A kind of curable urethane acrylate aqueous dispersion and preparation method thereof |
| CN114521208A (en) * | 2019-09-24 | 2022-05-20 | 巴斯夫欧洲公司 | Curable compositions with acrylic and silicone resins |
| CN111848914A (en) * | 2020-06-10 | 2020-10-30 | 华南理工大学 | Self-extinction light-cured waterborne polyurethane acrylate cured film with low water absorption rate and preparation method and application thereof |
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| CN110606932A (en) * | 2019-10-28 | 2019-12-24 | 广东昊辉新材料有限公司 | Photo-curing polyurethane acrylate aqueous dispersion and preparation method thereof |
| CN114316202A (en) * | 2021-12-16 | 2022-04-12 | 上海船舶工艺研究所(中国船舶工业集团公司第十一研究所) | Ultraviolet-curing aqueous polyurethane acrylate emulsion and preparation method thereof |
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